principles of coal mining

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  (PDF) Coal Mining Governance in Indonesia: Legal …

  2022322 · Coal production and coal export are important elements of the Indonesian economy, but mining operations are frequently plagued by conflicts among companies or between companies and local communities.

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  Underground Locomotive Haulage - Nottinghamshire …

  2021225 · Following nationalisation of the coal industry in 1947 the use of locomotives spread rapidly, doubling in the first year and after 10 years the numbers in use had increased from 90 to 906. In the early years locomotives were used on existing haulage roadways. Post nationalisation, construction and reconstruction often involved the newly adopted …

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  A review: The formation, prevention, and remediation of acid …

  20231017 · In abandoned open-pit coal mines, surface water and groundwater form acidic waters with high concentrations of metal ions due to chemical interactions with ores such as pyrite, and the formation of acid mine drainage (AMD) is one of the major sources of pollution of world concern. For this reason, this paper reviews the formation mechanisms …

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  Coal mining method with near-zero impact on the ecological …

  2022124 · In order to avoid the destruction of underground aquifers in the eco-environment frangible area caused by the exploitation of coal resources, a new coal mining method with near-zero impact on aquifers (MNIA) was proposed according to the advantages of strip mining and backfill mining methods to effectively control overburden, …

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  Longwall Mining | SpringerLink

  201623 · 9.1 Introduction. Since the early 1980s, longwall mining has developed into the safest, highest producing and most productive form of underground coal mining, rivalling the performance of many surface mining operations. In Australia, for example, advances in technology, geotechnical engineering and work practices over that period have resulted ...

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  Backfilling technology and strata behaviors in fully mechanized coal ...

  201231 · Abstract Based on the principle of fully mechanized backfilling and coal mining technology and combined with the Xingtai Coal Mine conditions, we mainly optimized the coal mining equipment and adjusted the coal mining method in the Xingtai Coal Mine 7606 working face for implementation this technology.

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  Principles and Practice in Mining Engineering

  ABSTRACT Principles and Practice in Mining Engineering is an up-to-date introduction to the scientific principles and technological practices of mining engineering. This book introduces the processes involved in surface and underground mining, and covers many topical issues common to mining engineering practices, including mining and quarrying …

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  Principles of formulating measures regarding preventing coal …

  Download Citation | On Jan 1, 2024, Zhen Qiao and others published Principles of formulating measures regarding preventing coal and gas outbursts in deep mining: Based on stress distribution and ...

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  Principle of using borehole electrode current method to …

  202081 · Second, we proposed the basic principle and method of monitoring the overburden stratum damage during coal seam mining using the borehole electrode current method.

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  Principles and Practices of Modern Coal Mining - Goodreads

  199711 · Principles and Practices of Modern Coal Mining is a comprehensive text book on the theory and practice of coal mining. It highlights the principles and describes the modern techniques of surface and underground coal …

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